Congratulations to the winner of our September quiz, Parima Laohadtanaphorn, MD, Boston University Medical Center, Allston, Mass. The correct answer to our September challenge was unilateral laterothoracic exanthem (also known as asymmetric periflexural exanthem of childhood). For a complete discussion of this case, see the Off-Center Fold section in the October ARCHIVES (Jhin MH, Eidelman M, Cohen SR, Husain S. Unilateral eruption in a child. Arch Dermatol. 2002;138:1371-1376).

Be sure to visit the Archives of Dermatology World Wide Web site (http://www.archdermatol.com) to try your hand at the Interactive Quiz. We invite visitors to make a diagnosis based on selected information from a case report or other feature scheduled to be published in the following month's print edition of the ARCHIVES. The first visitor to e-mail our Web editors with the correct answer will be recognized in the print journal and on our Web site and will also receive a free copy of the The Art of JAMA II.